ML25227A107

E-mail - Regulatory Audit Report in Support of Review of EPRI Report 3002028939, Risk-informed High Energy Line Break Evaluation Requirements EPID L-2024-NTR-0006)

ML25227A107
Person / Time
Site:	Electric Power Research Institute
Issue date:	08/22/2025
From:	Lois James Licensing Processes Branch
To:	Ruszkowski M Electric Power Research Institute
References
EPRI TR 3002028939, EPID L-2024-LRM-0062 pre-app, EPID L-2024-TOP-0003 pre-fee, EPID L-2024-NTR-0006 post-fee, Risk-Informed HELB Methodology
Download: ML25227A107 (1)

Text

1 Lois James From:

Lois James Sent:

Friday, August 22, 2025 10:03 AM To:

Ruszkowski, Michael J.

Cc:

RidsNrrOd Resource; RidsNrrDex Resource; RidsNrrDexEMIB Resource; RidsNrrDexESEB Resource; RidsNrrDnrl Resource; RidsNrrDnrlNphp Resource; RidsNrrDorl Resource; RidsNrrDorlLlpb Resource; RidsNrrDra Resource; RidsNrrDraApla Resource; Demetrius Murray; Lois James; John Bozga; Ching Ng; Kamal Manoly; Chakrapani Basavaraju; Kaihwa Hsu; David Rudland; David Gennardo; Stephen Cumblidge; Eric Reichelt; Gerond George; Stewart Bailey; Bob Pascarelli; Ian Tseng; Matthew Mitchell; Robert Tregoning; Jeff Poehler; Steve Ruffin; ext_Fernando_Ferrante; mruszkowski@epri.com; poregan@comcast.net

Subject:

Issuance of Regulatory Audit Report in Support of Review of EPRI Report 3002028939, Risk-informed High Energy Line Break Evaluation Requirements (EPID L-2024-NTR-0006)

Attachments:

EPRI TR 3002028939 - audit report 08-22.pdf Michael Ruszkowski, Plant Support Director Electric Power Research Institute 1300 West W.T. Harris Blvd Charlotte, NC 28262-8550

Dear Michael Ruszkowski:

By letter dated July 23, 2024 (Agencywide Documents Access and Management System (ADAMS)

Accession No. ML24205A146), Electric Power Research Institute (EPRI) submitted EPRI Technical Report 3002028939, Risk-Informed High-Energy Line Break Evaluation Requirements, to the U.S. Nuclear Regulatory Commission (NRC) for review and approval. EPRI Report 3002028939 provides an alternative means for assessing and confirming that plant structures, systems, and components that are important to safety are adequate to accommodate the effects of postulated accidents, including appropriate protection against the dynamic and environmental effects of postulated pipe ruptures.

By letter dated July 11, 2024 (ADAMS Accession No. ML23352A054), the NRC staff accepted EPRI TR 3002025288 for review.

By email dated October 25, 2024 (ADAMS Accession No. ML24298A056), the NRC staff issued an audit plan for the staffs review of EPRI TR 3002025288.

The NRC staff conducted a virtually at NRC Headquarters in Rockville, Maryland, from November 8, 2024-May 23, 2025, to increase its understanding of the application and identify information that will require docketing to support the NRC staffs regulatory findings. The regulatory audit report documenting the documents reviewed and subjects discussed is enclosed.

If you have any questions, please contact me by email at lois.james@nrc.gov.

Sincerely, Lois M. James, Senior Project Manager

ML25227A104 (pkg); ML25227A107 (email); ML25227A108 (audit report)

^via eConcurrence *via e-mail NRR-106 OFFICE NRR/DORL/LLPB/PM*

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NAME LJames^

MMitchell*

BPascarelli JPaige DATE 08/15/2025 08/17/2025 08/18/2025 08/20/2025 OFFICE NRR/DEX/EMIB*

NRR/DORL/LLPB/BC*

NRR/DORL/LLPB/PM*

NAME SBailey JRankin*

LJames^

DATE 08/20/2025 08/21/2025 08/20/2025